Rename component.json to bower.json

That's the new name of the Bower metafile.
Merge pull request #8050 from sindresorhus/patch-1

Rename component.json to bower.json
Fix navbar toggles
fixes #7018: authors, not author, in composer
fixes #7915: add issues link to composer
Merge pull request #8058 from burnsra/3.0.0-wip-navbar-toggle

Fix navbar toggles